CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Beginning balance at Dec. 31, 2020		$ 47,404,869	$ 8,693,519	$ (2,787,898)	$ 1,669,866	$ 54,980,356
Beginning balance (in shares) at Dec. 31, 2020	5,520,469
Net income			1,810,075			1,810,075
Other comprehensive loss					(2,343,977)	(2,343,977)
Stock option exercises, net of surrenders		39,589		(8,344)		31,245
Stock option exercises, net of surrenders (in shares)	4,147
Stock-based compensation expense		22,997				22,997
Cash dividends			(1,491,646)			(1,491,646)
Ending balance at Mar. 31, 2021		47,467,455	9,011,948	(2,796,242)	(674,111)	53,009,050
Ending balance (in shares) at Mar. 31, 2021	5,524,616
Beginning balance at Dec. 31, 2021		47,745,285	11,122,710	(2,817,392)	(2,132,970)	$ 53,917,633
Beginning balance (in shares) at Dec. 31, 2021	5,541,266					5,541,266
Net income			1,464,106			$ 1,464,106
Other comprehensive loss					(9,649,453)	(9,649,453)
Stock option exercises, net of surrenders		141,618				141,618
Stock option exercises, net of surrenders (in shares)	9,210
Stock-based compensation expense		27,989				27,989
Cash dividends			(943,580)			(943,580)
Ending balance at Mar. 31, 2022		$ 47,914,892	$ 11,643,236	$ (2,817,392)	$ (11,782,423)	$ 44,958,313
Ending balance (in shares) at Mar. 31, 2022	5,550,476					5,550,476